Lion Nebula
The Lion Nebula is a dying star's cast-off outer layers, and the comet-shaped tufts in its mane are dust clumps that survived its radiation.
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On 19 November 2025 Webb recorded the planetary nebula NGC 2392 in infrared. Hubble had imaged it in visible light in 2000. The infrared view highlights dust clumps and ionised gas. It lies 5,000 light-years away in Gemini. The nebula is a low-mass star's cast-off outer layers, and the white dwarf left behind now cooks the gas from the inside.
Four of the five bands are labelled for the material each traces, from Paschen-alpha hydrogen at 1.87 microns to silicate dust at 10 microns. The white dwarf carries eight-point diffraction spikes, ringed by purple-pink shells and a blue-white outer shell. The mane is the interior of a dust shell lit from within. Its tufts are compact clumps that shield the material behind them. A small spiral galaxy sits below centre. Astronomers estimate the nebula will disperse in about 10,000 years.